Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781720663669
Category :
Languages : en
Pages : 94
Book Description
An assessment was conducted on multiple wireless local area network (WLAN) devices using the three wireless standards for spurious radiated emissions to determine their threat to aircraft radio navigation systems. The measurement process, data and analysis are provided for devices tested using IEEE 802.11a, IEEE 802.11b, and Bluetooth as well as data from portable laptops/tablet PCs and PDAs (grouping known as PEDs). A comparison was made between wireless LAN devices and portable electronic devices. Spurious radiated emissions were investigated in the radio frequency bands for the following aircraft systems: Instrument Landing System Localizer and Glideslope, Very High Frequency (VHF) Communication, VHF Omnidirectional Range, Traffic Collision Avoidance System, Air Traffic Control Radar Beacon System, Microwave Landing System and Global Positioning System. Since several of the contiguous navigation systems were grouped under one encompassing measurement frequency band, there were five measurement frequency bands where spurious radiated emissions data were collected for the PEDs and WLAN devices. The report also provides a comparison between emissions data and regulatory emission limit.Salud, Maria Theresa P. and Williams, Reuben A. (Technical Monitor)Langley Research CenterELECTRONIC EQUIPMENT; RADIO FREQUENCY INTERFERENCE; AIRCRAFT COMMUNICATION; WIRELESS COMMUNICATION; PORTABLE EQUIPMENT; COMMUNICATION EQUIPMENT; LOCAL AREA NETWORKS; VERY HIGH FREQUENCY RADIO EQUIPMENT; INSTRUMENT LANDING SYSTEMS; MICROWAVE LANDING SYSTEMS; COLLISION AVOIDANCE; GLOBAL POSITIONING SYSTEM; RADAR BEACONS